You raise a good point. When we talk about electrification of retrofits, the investment the government has made in the national electricity strategy and the role of it is very important because we need to increase our supply of clean electricity to electrify buildings, transportation and some industry. I think that is clear.
The fact is right now you can retrofit any home to a high level of energy performance with the energy sources, the technology and the skills we have across the country. In some areas, it might be more challenging, but in most of the country, you can do that.
In multi-unit residential buildings, it's the economy of scale. The difference between a homeowner and the owner of a multi-unit residential building is that there's usually an ownership model. You have a property manager, and if the owner makes an investment, the operator and the property manager make sure that the benefits of the investment are realized so that the owner can reap the returns.
In a single-family home, that's—